Same thing I've had for breakfast very nearly every day since having my gallbladder out in December 2009: a Tillamook yogurt. I know, I'm boring.
I even take the silly things on overnight and longer road trips. Got into the habit because so many "traditional" American breakfast items have been off the list of things my stomach will handle ever since that surgery. Eggs, bacon, ham, sausage, all off the list for me for good, so it's a happy thing to be able to order half a waffle or a side of hash browns and be a cheap breakfast date since I'm usually awake first by several hours when traveling.